Re: [PyOpenGL-Users] using glGetUniformLocation

[Ian M. <geo...@gm...>]

Firstly, you probably don't want to specify the version in the vertex shader
unless you're sure of your system.  I also don't know what happens if you
don't specify anything under the main function.  Try using: "void main {
gl_Position = ftransform(); }".  As to your problem, I presume the uniform
location is returning -1?  You need to use the shader before you can query
values from it.  I think it's glUseProgram()